Not too sure about bruce lee or connan but the way I do my normal skin is with games workshop paints, Dwarf flesh undercoat then a layer of flesh wash, I then dry brush over the whole skin with dwarf flesh again before dry brushing again with Elf flesh to pick out the detail.

Panthro, now I think I can definitely help you here, For my Fixit custom I used games workshop chaos black for the base coat, drybrushed with codex grey then a drybrushed coat of fortress grey. I then drybrushed a small amount of Skull white to pick out the detail.